CN108856631A - The cold-heading molding technique of automobile gear - Google Patents
The cold-heading molding technique of automobile gear Download PDFInfo
- Publication number
- CN108856631A CN108856631A CN201810560879.3A CN201810560879A CN108856631A CN 108856631 A CN108856631 A CN 108856631A CN 201810560879 A CN201810560879 A CN 201810560879A CN 108856631 A CN108856631 A CN 108856631A
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- China
- Prior art keywords
- workpiece
- blank
- automobile gear
- forms
- squeezes
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/28—Making machine elements wheels; discs
- B21K1/30—Making machine elements wheels; discs with gear-teeth
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention discloses a kind of forming methods of automobile gear, including：Step 1) prepares blank：Wire rod is cut off, blank is obtained；Step 2) beam bar：Blank is put into the first cold upsetting die of car and is squeezed, so that blank tail portion forms the lesser link rod part of diameter；Step 3) gear forming：The workpiece that step 2 is obtained is put into the second cold upsetting die of car and squeezes, so that workpiece main body forms colored tooth close to the position of link rod part；Step 4) jumping-up：The workpiece that step 3 is obtained is put into third molding die and squeezes, so that the middle part of workpiece forms flange portion, the head of workpiece forms lumen orifice；The workpiece that step 5) obtains step 4 is put into the 4th molding die and squeezes, so that flange portion is squeezed into abnormity, and its outer rim forms three ear lug bosses, and flange portion is towards forming a mounting groove on the side of link rod part.The forming method of automobile gear of the invention, simplifies processing technology, improves production efficiency, reduces the pollution to environment.
Description
Technical field
The present invention relates to technical fields of mechanical processing, and in particular to a kind of cold-heading molding technique of automobile gear.
Background technique
Cold-heading is using mold at normal temperature to the forging method of metal bar material jumping-up (being often gathering stock) forming.Usually
For manufacturing the head of screw, bolt, rivet etc..It can reduce or replace machining.Since cold-heading has high production efficiency,
The advantages that saving material, more and more part requirements are shaped using cold-heading now.
Gear is the important component in car transmissions, and the quality of the quality of production affects the peace of entire vehicle transmission
Full property and stability.The manufacture craft of country's similar product is at present：Cutting stick → annealing → phosphorus saponification process → in advance at
Type → annealing → phosphorus saponification process → extrusion molding.There are many defects for this technique：Such as (customized corresponding steel pipe) at high cost；Work
Sequence is more, complex process；Long processing time, about 4/minute, production efficiency are low；The liquid waste processing that phospholeumization generates is improper can be to ring
Border pollutes, not environmentally.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of cold-heading molding methods of automobile gear, with prior art phase
Than the moulding process simplifies processing technology, improves production efficiency, reduces the pollution to environment.
In order to solve the above-mentioned technical problems, the present invention provides the forming methods of automobile gear, include the following steps：
Step 1) prepares blank：Wire rod is cut off, cylindric blank is obtained；
Step 2) beam bar：Blank is put into the first cold upsetting die of car and is squeezed, so that blank tail portion formation diameter is smaller
Link rod part；
Step 3) gear forming：The workpiece that step 2 is obtained is put into the second cold upsetting die of car and squeezes, so that workpiece master
Body forms colored tooth close to the position of link rod part；In the process, the diameter of workpiece entirety becomes larger.
Step 4) jumping-up：The workpiece that step 3 is obtained is put into third molding die and squeezes, so that the middle part of workpiece
Extruding forms flange portion, and the head of workpiece forms lumen orifice；
The workpiece that step 5) obtains step 4 is put into the 4th molding die and squeezes so that flange portion be squeezed into it is different
Shape, and its outer rim forms three ear lug bosses, position shape of the flange portion towards ear lug boss close on the side of link rod part
At a mounting groove.
A kind of embodiment according to the present invention when forming using the second cold upsetting die of car, can also make workpiece in step 3
Head squeezes to form chamfering.
A kind of embodiment according to the present invention, in step 3, the flower tooth of formation are the flower tooth of five valve types.
A kind of embodiment according to the present invention when forming using the 4th cold upsetting die of car, can also make connecting rod in steps of 5
The one end in portion squeezes to form chamfering.
A kind of embodiment according to the present invention further includes the steps that scouring depth lumen orifice in steps of 5.
A kind of embodiment according to the present invention further includes the extra extrusion for generating squeezing action in step 2-5
The process of material polishing removal.
The beneficial effects of the present invention are：
1, the forming method of automobile gear of the invention simplifies and adds from wire rod to forming only by one procedure of cold-heading
Work technique, and the reduction of process reduces the energy consumption in entire technical process also accordingly.
2, the forming method of automobile gear of the invention, multistation carries out simultaneously during cold-heading, obtains production efficiency
It improves, yield has reached 50/minute；Cold-heading processing efficient is coherent, reduces the labor intensity of worker.
3, the forming method of automobile gear of the invention needs not move through phosphorus saponification process, more environmentally friendly.
Detailed description of the invention
Fig. 1 is the process flow chart of forming method of the invention；
Fig. 2 is the structural schematic diagram of cylindric blank；
Fig. 3 is the structural schematic diagram of step 2 treated workpiece；
Fig. 4 is the structural schematic diagram of the first cold upsetting die of car；
Fig. 5 is the structural schematic diagram of step 3 treated workpiece；
Fig. 6 is the structural schematic diagram of the second cold upsetting die of car；
Fig. 7 is the structural schematic diagram of step 4 treated workpiece；
Fig. 8 is the structural schematic diagram of third cold upsetting die of car；
Fig. 9 is the structural schematic diagram of step 5 treated workpiece；
Figure 10 is the structural schematic diagram of the 4th cold upsetting die of car；
Wherein：1, blank；11, link rod part；12, flower tooth；13, chamfering；14, flange portion；15, lumen orifice；16, ear protrusion
Portion；17, mounting groove；2, the first cold upsetting die of car；3, the second cold upsetting die of car；4, third cold upsetting die of car；5, the 4th cold upsetting die of car.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples, so that those skilled in the art can be with
It more fully understands the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
In following implementation, term " head ", " tail portion " are one end that is, upward relative to described in the orientation in attached drawing
For head, one end directed downwardly is tail portion.
Referring to Figure 1, the present invention provides a kind of cold-heading molding methods of automobile gear, with existing forming method phase
Than, which, only by one procedure of cold-heading, greatly simplifies processing technology, reduces energy consumption from wire rod to forming,
It is more environmentally-friendly and due to needing not move through phosphorus saponification process in forming process.
Specifically, the forming method includes the following steps：
Step 1) prepares blank 1：Wire rod is cut off, cylindric blank 1 is obtained；
According to the needs of actual product, it may customize the wire rod of fixed line footpath, then cut and form isometric cylindric blank
1.The structural schematic diagram of blank 1 is referring to fig. 2.
Step 2) beam bar：Blank 1 is put into the first cold upsetting die of car 2 and is squeezed so that 1 tail portion of blank formed diameter compared with
Small link rod part 11；
Fig. 3 shows the structural schematic diagram of the workpiece handled through step 2), and Fig. 4 shows the structure of the first cold upsetting die of car 2
Schematic diagram.It can be seen that rounding off between workpiece main body and link rod part 11 at this time.
Step 3) gear forming：The workpiece that step 2 is obtained is put into the second cold upsetting die of car 3 and squeezes, so that workpiece
Main body forms colored tooth 12 close to the position of link rod part 11；In the process, the diameter of workpiece entirety becomes larger.
Fig. 5 shows the structural schematic diagram of the workpiece handled through step 3), and Fig. 6 shows the structure of the second cold upsetting die of car 3
Schematic diagram.It can be seen from the figure that obtained flower tooth 12 is five valve types flower tooth 12, and workpiece head squeezes to be formed in this step
Chamfering 13.
Step 4) jumping-up：The workpiece that step 3 is obtained is put into third molding die and squeezes, so that the middle part of workpiece
Extruding forms flange portion 14, and the head of workpiece forms lumen orifice 15；
Fig. 7 shows the structural schematic diagram of the workpiece handled through step 4), and Fig. 8 shows the structure of third cold upsetting die of car 4
Schematic diagram.It can be seen from the figure that obtained workpiece, head is formed as that class is round table-like, and the lumen orifice 15 formed is shallower.
The workpiece that step 5) obtains step 4 is put into the 4th molding die and squeezes, so that flange portion 14 is squeezed into
Abnormity, and its outer rim forms three ear lug bosses 16, flange portion 14 towards on the side of link rod part 11 close to ear lug boss
16 position forms a mounting groove 17, to obtain automobile gear of the invention.
Fig. 9 shows the structural schematic diagram of the workpiece handled through step 5), and Figure 10 shows the structure of the 4th cold upsetting die of car 5
Schematic diagram.It can be seen from the figure that in this step, the end of link rod part 11 squeezes to form chamfering 13, workpiece head is squeezed into
Column, lumen orifice 15 is by scouring depth.
Embodiment described above is only to absolutely prove preferred embodiment that is of the invention and being lifted, protection model of the invention
It encloses without being limited thereto.Those skilled in the art's made equivalent substitute or transformation on the basis of the present invention, in the present invention
Protection scope within.Protection scope of the present invention is subject to claims.
Claims (6)
1. the forming method of automobile gear, which is characterized in that include the following steps：
Step 1) prepares blank：Wire rod is cut off, cylindric blank is obtained；
Step 2) beam bar：Blank is put into the first cold upsetting die of car and is squeezed, so that blank tail portion forms the lesser company of diameter
Bar portion；
Step 3) gear forming：The workpiece that step 2 is obtained is put into the second cold upsetting die of car and squeezes, so that workpiece main body is leaned on
The position of nearly link rod part forms colored tooth；
Step 4) jumping-up：The workpiece that step 3 is obtained is put into third molding die and squeezes, so that the middle part of workpiece is formed
The head of flange portion, workpiece forms lumen orifice；
The workpiece that step 5) obtains step 4 is put into the 4th molding die and squeezes, so that flange portion is squeezed into abnormity, and
Its outer rim forms three ear lug bosses, and the position of flange portion towards ear lug boss close on the side of link rod part forms a peace
Tankage.
2. the forming method of automobile gear as described in claim 1, which is characterized in that in step 3, use the second cold heading die
When tool molding, also workpiece head can be made to squeeze to form chamfering.
3. the forming method of automobile gear as described in claim 1, which is characterized in that in step 3, the flower tooth of formation is five
The flower tooth of valve type.
4. the forming method of automobile gear as described in claim 1, which is characterized in that in steps of 5, use the 4th cold heading die
When tool molding, also one end of link rod part can be made to squeeze to form chamfering.
5. the forming method of automobile gear as described in claim 1, which is characterized in that further include scouring depth inner cavity in steps of 5
The step of hole.
6. the forming method of automobile gear as described in claim 1, which is characterized in that further include that will squeeze in step 2-5
The process for the extra extruded stock polishing removal that effect generates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810560879.3A CN108856631A (en) | 2018-05-25 | 2018-05-25 | The cold-heading molding technique of automobile gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810560879.3A CN108856631A (en) | 2018-05-25 | 2018-05-25 | The cold-heading molding technique of automobile gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108856631A true CN108856631A (en) | 2018-11-23 |
Family
ID=64336888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810560879.3A Pending CN108856631A (en) | 2018-05-25 | 2018-05-25 | The cold-heading molding technique of automobile gear |
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| CN (1) | CN108856631A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112207221A (en) * | 2020-09-14 | 2021-01-12 | 苏州工业园区君力精工有限公司 | New energy automobile battery pole cold heading forming process |
| CN114346138A (en) * | 2021-12-23 | 2022-04-15 | 重庆长安工业(集团)有限责任公司 | Cold extrusion molding method for high-strength aluminum alloy multi-petal combined rotary body metal piece |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104368744A (en) * | 2014-12-01 | 2015-02-25 | 苏州工业园区新凯精密五金有限公司 | Cold heading forming technology of automobile door lock shaft and die structure for lock shaft forming |
| CN104439002A (en) * | 2014-11-15 | 2015-03-25 | 苏州工业园区新凯精密五金有限公司 | Adapter shaft cold heading forming technology and die structure of formed flower gear |
| CN104493061A (en) * | 2014-12-01 | 2015-04-08 | 苏州工业园区新凯精密五金有限公司 | Cold-forging technology for safety belt transmission shaft and die structure of molded transmission patterned tooth |
| CN106180532A (en) * | 2016-08-30 | 2016-12-07 | 苏州工业园区新凯精密五金有限公司 | The processing technique of a kind of automotive seat power transmission shaft and the mould of contracting flower tooth |
| CN106270340A (en) * | 2016-08-25 | 2017-01-04 | 苏州工业园区新凯精密五金有限公司 | A kind of cold-heading molding technique for manufacturing drive shaft and cold-heading module |
| CN106694792A (en) * | 2016-12-28 | 2017-05-24 | 宾科汽车紧固件（昆山）有限公司 | Cold heading device and process for specially-shaped torsion rod |
-
2018
- 2018-05-25 CN CN201810560879.3A patent/CN108856631A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104439002A (en) * | 2014-11-15 | 2015-03-25 | 苏州工业园区新凯精密五金有限公司 | Adapter shaft cold heading forming technology and die structure of formed flower gear |
| CN104368744A (en) * | 2014-12-01 | 2015-02-25 | 苏州工业园区新凯精密五金有限公司 | Cold heading forming technology of automobile door lock shaft and die structure for lock shaft forming |
| CN104493061A (en) * | 2014-12-01 | 2015-04-08 | 苏州工业园区新凯精密五金有限公司 | Cold-forging technology for safety belt transmission shaft and die structure of molded transmission patterned tooth |
| CN106270340A (en) * | 2016-08-25 | 2017-01-04 | 苏州工业园区新凯精密五金有限公司 | A kind of cold-heading molding technique for manufacturing drive shaft and cold-heading module |
| CN106180532A (en) * | 2016-08-30 | 2016-12-07 | 苏州工业园区新凯精密五金有限公司 | The processing technique of a kind of automotive seat power transmission shaft and the mould of contracting flower tooth |
| CN106694792A (en) * | 2016-12-28 | 2017-05-24 | 宾科汽车紧固件（昆山）有限公司 | Cold heading device and process for specially-shaped torsion rod |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112207221A (en) * | 2020-09-14 | 2021-01-12 | 苏州工业园区君力精工有限公司 | New energy automobile battery pole cold heading forming process |
| CN114346138A (en) * | 2021-12-23 | 2022-04-15 | 重庆长安工业(集团)有限责任公司 | Cold extrusion molding method for high-strength aluminum alloy multi-petal combined rotary body metal piece |
| CN114346138B (en) * | 2021-12-23 | 2023-06-23 | 重庆长安工业(集团)有限责任公司 | Cold extrusion forming method for high-strength aluminum alloy multi-petal combined rotary body metal part |
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Application publication date: 20181123 |
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